ABB ACS550-01-157A-4 Inverter Drive – 55kW/75kW, IP21

The ABB ACS550-01-157A-4 inverter drive is a high-powered, industrial-grade variable frequency drive engineered for motors up to 75 kW. It provides reliable speed control, efficient operation, and robust design suited for the most demanding industrial and infrastructure environments.

Featuring sensorless vector and VxF control modes, built-in Modbus RTU, and housed in a heavy-duty R6 frame, this ABB drive is ideal for HVAC, water treatment plants, conveyors, and high-load machinery.

Technical Specifications

Model: ACS550-01-157A-4
Series: ACS550
Type: Variable Frequency Drive (VFD)
Power Output: 55 kW (75 HP) at High Overload / 75 kW (100 HP) Fan & Pump Duty
Enclosure: IP21
Mounting: Wall or Cubicle Mount
Application: Large pumps, industrial fans, compressors, HVAC, and heavy processing systems

Electrical Specifications

• Input Voltage: 380–480 V AC (±10%)
• Phase: 3-phase
• Frequency Range: 50–60 Hz (±5%)
• Output Frequency: 0–500 Hz
• Output Current (HO / ND): 124 A (High Overload) / 157 A (Normal Duty)
• Overload Capacity: 150% for 60 s (HO) / 110% for 60 s (ND)
• Control Type: VxF and Sensorless Vector Control
• Brake Chopper: Not included (external braking unit optional)
• Heat Dissipation: Max 2.3 kW

I/O and Communication

• Digital Inputs: 6 programmable
• Analog Inputs: 2
• Analog Outputs: 2
• Relay Outputs: 3 contact sets
• Keypad: Assistant Control Panel (included)
• RS-485 / Modbus RTU: Built-in

Mechanical and Environmental

• Mounting Type: Wall or cubicle-mounted
• Frame Size: R6
• Weight: 69 kg
• Dimensions (Frame): 888 × 302 × 400 mm (H × W × D, incl. gland kit)
  Product Net Dimensions: 1090 × 410 × 550 mm (H × L × W)
• Cooling: Internal fan (ventilation: 200 mm above/below, 0 mm sides)
• Mounting Holes: 4 × 9 mm slotted holes (263 mm × 675 mm centres)
• Operating Temp: Up to +40 °C ambient

Compliance and Certifications

• CE Certified
• UL / cUL Listed
• EMC Compliance: IEC EN61800-3:2004 (C3/C2)
• RoHS Compliant
• Manufacturing Standards: ISO 9001, ISO 14001

Replacement Information

The ABB ACS550 series was officially replaced by the ABB ACS580 line in January 2018
Direct ACS580 equivalents offer improved diagnostics, connectivity, and energy efficiency

Key Benefits of the ABB ACS550-01-157A-4

✅ High-Power Capability: Handles motors up to 75 kW for industrial-scale applications.

✅ Built-In Modbus RTU: Ready for seamless networked system integration.

✅ Heavy-Duty Build: R6 frame with excellent thermal management and large heat dissipation.

✅ Flexible Mounting Options: Supports wall or cubicle installation.

✅ Reliable ABB Engineering: Proven global platform with long service life.

📦 In Stock Now at Drive Outlet Megastore

At Drive Outlet Megastore, we offer unbeatable prices on the ABB ACS550-01-157A-4 inverter drive.

Designed to excel in critical industrial operations, this powerful ABB drive ensures precision control and rugged reliability in your most demanding applications.

Request a quote or contact us today

Trusted ABB Drives. Fast Delivery. Lowest UK Prices – Only at Drive Outlet Megastore.